The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 1987
Filed:
Sep. 09, 1985
Applicant:
Inventors:
Myron J Block, North Salem, NH (US);
Tomas B Hirschfeld, Livermore, CA (US);
Assignee:
Ord, Inc., Nahant, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ; G01N / ; G01N / ;
U.S. Cl.
CPC ...
436514 ; 250302 ; 2504611 ; 356 731 ; 356445 ; 422 57 ; 436172 ; 436501 ; 436527 ; 436546 ;
Abstract
An assay method and apparatus employing total internal reflection of excitation radiation at an activated region on the surface of an optically conductive rod or fiber surrounded by a liquid phase of lower index of refraction, so as to excite into fluorescence fluorophores in the liquid present in a thin layer around the rod surface. The induced fluorescence is then gathered and measured. Excitation occurs while flowing a sample of the liquid phase through an enclosure of fixed dimensions bounded in part by the activated region.